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For a population with a mean equal to 100 and a standard deviation equal to 25, calculate the standard error of the mean for the following sample sizes.
A. 10
B. 40
C. 70
suppose that a group of 1000 orange trees is laid out in 50 rows of 20 trees each. to determine the sugar content of
A bus company claims that the mean waiting time for a bus during rush hour in less than 7 minutes. A random sample of 20 waiting times has a mean of 5.2 minutes with a standard deviation of 2.1 minutes.
Assuming both assertions are correcting and assuming normal distributions, which review book is more likely to result in an SAT gain over 60 points?
What is the probability that there will be more than three trucks either being loaded or waiting?
An insurance company has gathered the following information regarding the number of accidents reported per day over a period of 100 days.
Evaluate the importance of each of these sums of squares. Give the 99% Scheffe confidence intervals for the linear and quadratic contrasts.
Describe whether statements regarding statistical significance are true or false. When your results are found to be statistically significant, can one conclude that they will have a meaningful effect in the clinic.
SCCoast, an Internet provider, developed the following frequency distribution on the age of Internet users. Find the mean, median, and the standard deviation.
ten good coins are tossed simultaneously.find the probability of obtaining four heads.use the binomial distribution to
from a population that is not normally distributed and whose standard deviation is not known a sample of 6 items is
a student takes a calculus midterm and a history midterm. the mean and standard deviation on the calculus midterm are
an offspring of a grey cat is grey with probability 0.6 and white with probability 0.4. an offspring of a white cat is
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